A student has two loans totaled $45,000. The interest of one loan is 5.1% and the interest of the other loan is 3.8%. After one year, the student has paid $1953.10 in interest. What was the amount of each loan?
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OpenStudy (anonymous):
0.051 x + 0.038y = 1953.1
x + y = 45000
solve for x and y
OpenStudy (anonymous):
I am not sure how
OpenStudy (anonymous):
ok multiply the 2nd equn, by 0.051 to eliminate x
0.051x + 0.051y = 2295
now subtract this from first equn.
-0.013y = - 341.9
y = -341.9 / -0.013 = $26300 - is the amount of first loan
x = 45000 - 26300
OpenStudy (anonymous):
ill let you do the last subtraction
OpenStudy (anonymous):
ok this may take a minute
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OpenStudy (anonymous):
I am kind of confused....what did you multiply 0.051 by?
OpenStudy (anonymous):
the equation x + y = 45000
i multiplied each of the three terms by 0.051
OpenStudy (anonymous):
OOh okay, after subtracting I got 18,700
OpenStudy (anonymous):
yup
OpenStudy (anonymous):
sweet so the 3.8 loan is 18700 and the 5.1 loan is 26300??
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